Fireproof construction.



YATENTED 00T. 20,` 1903 Y C. H. SGAMMBLL. l

FIREPROOF CONSTRUCTION.

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APPLIUATION FILED JUNE 23, 1902.

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UNi'rED Y 'STATES Patented October 20, 1903.

PATENT Fries.

CHARLES H. SCAMMELL, OF NEW YORK, N. Y., ASSIGNOR TO THE NEW JERSEY WIRECLOTH COMPANY, OF TRENTON, NEV JERSEY, A COR- PORATION OF NEW JERSEY.

SPECIFICATION forming part of Letters Patent No. 741,934, dated October20, 1903.

Application led .Tune 23, 1902.

To all whom it may concern:

Beit known that I, CHARLES H. SGAMMELL, a citizen of the United States,residing at New York, county of New York, and State of New York, haveinvented certain new and useful Improvements in Fireproof Constructions,fully described and represented in the following specification and theaccompanyin g drawings, forming a part of the same.

The object of the present invention is to provide improved means forsupporting the layer of concrete which is new commonly employed on theunder side of iron beams in concreteloor constructions, it havingbeenfound difficult in practice to assure the retention of this layer ofconcrete. The present invention provides means by which this layer ofconcrete is strengthened and supported, so as to be efficiently retainedin place, while at the same time the metal-work used for this purpose islight and cheap and readily put in place in building the floorconstruction and the other steps in such construction in no wayinterfered with.

For a full understanding of the invention .a detailed description of aconstruction embodying the same in preferred forms will now be given inconnection with the accompanying drawings, forming a part of thisspecification, and the features forming the invention will then beparticularly pointed out in the claims.

In the drawings, Figure l is a section longitudinally of the beams,showing my invention applied in connection with aconcreteloorandsuspended-ceilingconstruction. Fig. 2 is a cross-sectionof the same. Fig. 3 is a section similar to Fig. 1, showing my inventionapplied to a construction having no suspended ceiling. Fig. et is across-section of Fig. 3.

The beams A are shown as of the common I form and the door constructionas consisting of the ordinary web of concrete B, with bodies of concreteC extending downward along the webs of the beams and around and underthe bottom flanges of the beams. In the construction shown in Figs. land 2 the bottom flanges of the beams carry clips c 0f the usual form,having the downwardly- Serial No. 112,756. (No model.)

extending arms b, in which are supported the ceiling-rods D, carryingthe usual ceiling of metal lathing E and plaster F.

The features thus far described are shown as of common form, except forthe special fea` 'ture 0f the present invention, which consists of thewires G, extending along the opposite flanges of the beams and supportedby the clips a, these wires G being preferably drooped between theclips, as shown, so as to secure the desired support of the bodies ofconcrete below the flanges of the beams. This drooping of the wiresbetween the clips se curesa better support of the concrete, and thetensile strength of the wires is utilized at once to support theconcrete and any weight thereon and strengthen the concrete instead ofnot being utilized until after deflection, as may be the case if theyare horizontal, which may permit the concrete to deflect sufficiently toweaken or crack the concrete before the tensile strength of thewires isutilized, a very strong and efticient construction being thus secured.It will be seen that these wires G may readily be put in place inattaching the clips c, being simply inclosed by the clips when thelatter are bent around the flanges of the beams, and that they:interfere in no way with the process of filling in the concrete ontothe centering, which may be supported in `any suitable manner, so as toprovide for the concrete web B and beam protection C. When a suspendedceiling,

with the clips a, is not to be used, the wires G may readily be put inposition by the use of special clips c, as shown in Figs. 3 and 4, theseclips being arranged at suitable distances apart to secure the desiredsupport and position of the wires. Vhile the clips a, c are shown asholding the wires G close up to the bottom Iianges of the beams at thepoints at which the clips are applied and the Wires drooped between theclips on the curve naturally resulting from sagging of the wires andthis construction is preferable, it will be understood that my inventionis not thus IQO 'retest at the desired distance below the bottom partand under sideof the beam, clips on the flanges of the beams and extendhorizontally without the substantial droop shown in the drawings, or thewires may be supported close to the beam by the clips and then bentsharply downward to the level desired. It will be understood also thatthe wires may be positioned below and at one side of the beamflangeinstead of directly under it, if desired, and that wires additional tothe two shown may be used.

l. In a reproof floor or similar construction, the combination withbeams and a beam protection consisting of a body`of concrete or similarplastic material covering the lower part and under side of the beam, ofa beamprotection support consisting of separate wires extending parallelwith the beams at such a distance from the beams as to support theconcrete on the under side of the beams and embedded in the concretebody, substantially as described.

2. In a fireproof floor or similar construction, the combination withbeams and a beam protection consisting of a body of concrete or similarplastic material covering the lower part and under side of the beam, ofa beamprotection support consisting of separate wires extending parallelwith and below the beams and supported at intervals from and close tothe bottom of the beams and drooped between their points of support soas to support the concrete on the under side of the beams and embeddedin the concrete body, substantially as described.

3. In a fireproof lloor or similar construction, the combination withbeams and a beam protection consisting of a body of concrete or similarplastic material covering the lower part and under side of the beam,clips on the flanges of the beams, and a beam-protection supportconsisting of separate wires supported by said clips and extendingparallel with and below the beams at such a distance from the beams astosupport the concrete on the under side of the beams and embedded inthe concrete body, substantially as described.

4. In a reproof floor or similar construction, the combination withbeams and a beam protection consisting of a body of concrete or similarplastic material covering the lower flanges of the beams, and abeam-protection support consisting of separate wires extending parallelwith and below the beams and supported at intervals from and close tothe bottoms of the beams by said clips and separated from the beamsbetween said clips so as to support the concrete on the under side ofthe beams and embedded in the concrete body, substantially as described.

5. The combination with a flanged beam A and beam protection C ofconcrete or similar plastic material, of clips on the lower beamflangeand a beam-protection support consisting of wires G on opposite sides ofthe center of the beam extending along and below the bottom flange atsuch a distance from the ilange as to support the concrete on the underside of the flange, said wires being supported by said clips andembedded in the concrete, substantially as described. l

6. The combination with a flanged beam A and beam protection C ofconcrete or similar plastic material, of clips on the lower beamflangeand a beam-protection support consisting of wires G on opposite sides ofthe center of the beam extending along and below the bottom flange atsuch a distance from the flange as to support the concrete on the underside of the flange, said wires being supported by said clips andembedded in the concrete, and a suspended ceiling of lathing and plasticmaterial supported by said clips, substantially as described.

7. The combination with a flanged beam A and beam protection C ofconcrete or similar plastic material, of clips on the lower beamange anda beam-protection support consisting of wires `G on opposite sides ofthe ceuter of the beam extending along and below the bottom flange andsupported by said clips and drooped between the clips so as to supportthe concrete on the under side of the flange and embedded in theconcrete, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

CHAS. H. SCAMMELL.

Witnesses:

RoBT. L. WINNE, GEO. W. MooRHEAD.

